Inflorescences are flat-
to round-topped, many-branched in robust plants. Branch
inflorescences are similar, with flower
heads concentrated toward the ends of branches in corymb-like
arrangements.

Flower heads are radiate.
Rays are white;
disc florets are yellow, turning
pale yellow to light brown with
age. Lobes of disc
corollas are long and strongly recurved.
Involucral
bracts are of unequal length, not flat**. Dark
green zones of involucral bracts are not well defined, often limited
to a narrow band along the midvein. Pappus
bristles occur in 4 series, the outermost bristles are much shorter than
the inner series. Inner series of pappus bristles have slightly
swollen tips.

Basal
and lower stem leaves are often deciduous by flowering. Mid- to
upper stem leaves are alternate,
lanceolate
to elliptic
in outline, and untoothed. The longest stem leaves are at
mid-stem.